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【单选题】
We____do morning exercises every day but now we____running in the morning. [     ]
A.
are used to, used for
B.
  used to, are used for
C.
were used to, are used to
D.
used to, are used to
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参考答案:
举一反三
【单选题】各种血液成分制备,在采血后几小时完成
A.
10-12小时
B.
6-8小时
C.
24小时
D.
48小时
E.
以上都不正确
【单选题】下列关于蛋白质α螺旋结构的叙述正确的是
A.
结构的稳定靠盐键
B.
是蛋白质三级结构的一种形式
C.
多为右手螺旋,结构的稳定主要靠氢键
D.
结构的稳定主要靠二硫键
【单选题】The notice of casualty to a ship must include ______.
A.
a request for assistance
B.
the location of the unit at the time of the casualty
C.
an estimate of the cost to repair damages
D.
the amount of fuel remaining
【单选题】42 Which statement is NOT true of Covent Garden?
A.
It is crowded with people.
B.
It is located in London.
C.
It is filled with stalls.
D.
It is surrounded by shops, churches, restaurants and cafes.
【单选题】下列关于蛋白质α螺旋结构的叙述不正确的是
A.
每圈螺旋包含3.6个氨基酸残基
B.
脯氨酸、甘氨酸是α螺旋结构的破坏者
C.
结构的稳定靠侧链的相互作用
D.
结构的稳定靠氢键
【单选题】回答(6)题 查看材料
A.
education
B.
status
C.
knowledge
D.
location
【单选题】32 Which statement is NOT true of Covent Garden?
A.
It is crowded with people.
B.
It is located in London.
C.
It is filled with stalls.
D.
It is surrounded by shops, Churches restaurants and cafes.
【单选题】下列关于蛋白质 α 螺旋结构的叙述哪一个是正确的?
A.
结构的稳定靠盐键
B.
是蛋白质三级结构的一种形式
C.
多为右手螺旋,结构的稳定主要靠氢键
D.
结构的稳定主要靠二硫键
【单选题】关于α螺旋结构的叙述正确的是
A.
又称随机卷曲
B.
柔软但无弹性
C.
螺旋一圈由3.6个氨基酸残基组成
D.
只存在于球状蛋白质中
E.
属于左手螺旋
【单选题】All the historic sites within the range of Three Gorges Reservoir have been ______ to some new locations high above. [     ]
A.
transformed
B.
transmitted
C.
transferred
D.
transported
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